[Python] How to materialize Polars expression into Series?

Working with a single series instead of a dataframe, how can I materialize an expression on that series? For instance, when I run

time = pl.Series([pl.datetime(2025, 3, 27)])
(time + pl.duration(minutes=5)).to_numpy()


I get

AttributeError Traceback (most recent call last)
Cell In[46], line 2
1 time = pl.Series([pl.datetime(2025, 3, 27)])
----> 2 (time + pl.duration(minutes=5)).to_numpy()

AttributeError: 'Expr' object has no attribute 'to_numpy'

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